Blasting-cartridge.



J. H. BLUMENSTEIN.

BLASTING CARTRIDGE.

APPLICATION FILED .lULY 5.191].

1,263,366. Patented Apr. 23, 1918.

I Elmwmtoz v UNITED STATES PATENT OFEIC.

JOHN H. IBL'UMENS'I'EIN, OF LA GRANDE, OREGON.

iamsrme-canrnmen.

To all whom it may concern:

Be it known that I, JOHN H. BLUMEN- scram, a citizen of the United States, and resident of La Grande, in the county of Union and State of Oregon, have invented certain new and useful Improvements in Blasting-Cartridges, of which the following is a specification.

This invention relates to improvements in explosive devices; the principal object of the invention being to provide a blasting cartridge so formed as to permit the ready driving or forcing of the same into a substance to the proper depth and angle therein, and upon charging, exploded, thus, demolishing or removingthe substance. It is a more specific object of my inven tion to provide a blasting cartridge having a substance penetrating portion adapted to facilitate embedding of the same in a substance-to be blasted this penetrating portion being'formed to prevent the turning of the cartridge during embedding thereof and the deflecting of the same from its course, and also the turning thereof when sections used in embedding the cartridge are removed.

Other and equally important objects of .the invention reside in the provision of a device of the character mentioned with a view to compactness, and in whlch the numberof parts are few, the construction simple, the cost of production small, and efiiciency and operation high.

Other objects will be in part obvious and in part. pointed out hereinafter.

In the accompanying drawings wherein is shown one of the various possible embodiments of my invention:

Figure'l is a perspective of the improved blasting cartridge; gig. 2 is a vertical section therethrough; an

Fig; 3 is a transverse section through the substance penetratin portion.

Similar reference 0 aracters refer to similar parts throughout the several views of the drawings.

Certain aimsand features of this invention will be more readily understood if the following facts be borne in mind:

In order thatthefull force of an ex plosive might be rendered effective, it is well known that the charge must necessarily be securely confined and that space between the same and the substance to be efli'ectlve Specification of Letters Eatent.

Application filed .Tuly 5, 1917. Serial No. 178,828.

Patented Apr. 23, 1918.

must also be eliminated, thereby avoiding the forming of air cushions about the charge and materially retarding the spending of its force; also, the accurate placing of the charge. Therefore, if the explosive be properly confined and placed in a substance free of air cushions, means being provided for causing the proper placing of the cartridge, the full force of the same will be spent upon said substance. The above are among the dominant aims of this invention, and are, among other attained in a construction of the nature of that hereinafter described.

Having more particular reference to the drawings, 1 designates a tubular body or container, the same being formed of metal or other suitable material and having one of its ends closed and pointed as at 2. It is to be noted, that the pointed portion 2 of the tubular body is substantially square and due to the flattened sides thereof the tubular body will be accurately directed when driven into a substance, that is, the flattened sides preventing the'- deflecting or deviating of the same from its course as it is forced into and through the substance to be blasted.

As shown in Fig. 2, the pointed portion is formed on the tubular body by mashing the end thereof with a hammer or other suitable instrument, or by suitable compressing devices commonly known to the art.

If desired, the open or remaining end of the tubular body may be internally or externally threaded, external. threads being shown and designated by the numeral 3, for the purpose of convenience. By providing the open end of the body with screw threads, it will be readily understood that other sections similar to the tubular body may be joined thereto or a suitable implement may be turned into engagement with the same when it is desired to force the same into a substance to be blasted. Furthermore, to prevent distorting the open end of the tubular body, a protectiililg cap having a complementary screw sha not shown, may be and preferably is turned into engagement with the screw threaded portion 3 of said body or into engagement with the outermost ends of such sections as may be engaged with the body 1.

In operation, the tubular body 1 is forced or driven into a substance to be blasted and when properly positioned therein is filled with an explosive charge, the charge being pr0p erly tamped therein. Due to the perfectly smooth inner surface of the body 1, it will be appreciated that particles of the charge will be prevented from adhering to its sides, and as a consequence, premature explosions avoided. With the explosive charge properly tamped in the body 1 ignition means. such as electrodes or the like are then placed into engagement with the same and the necessary spark then supplied for exploding the charge. Should the blasting cartridge be used in connection with frozen substances, the pointed or penetrating portion 2 thereof may be heated to the desired degree and then embedded in the substance; sufiicient time being allotted before the placing of the explosive charge therein, in order that the penetrating portion may be cooled.

Manifestly, the construction shown is capable of considerable modification and such modification as is ,Within the scope of my claim, I consider Within the spirit of my invention. r

I claim: p

A blasting cartridge constructed from a tubular cylindrical body having one end pointed by distorting the same and formed with flattened sides, the upper portion of said body being screw threaded. I

In testimony whereof, I affix my signature hereto.

/ JOHN BLUMENSTETN. 

